I know this has come up on the list before, and I've reread those
threads but am little confused.
Here's a sample student program file:
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; volume-of-solid: number number number -> number
; given the length, width, and height of a rectangular prism,
; produces the volume
(define (volume-of-solid length width height)
(* length width height))
(check-expect (volume-of-solid 2 3 4) 24)
(check-expect (volume-of-solid 3 5 7) 105)
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I'd like to test this file with something like:
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#lang racket
(define score 0)
(when (= (volume-of-solid 3 4 5) 60)
(set! score (add1 score)))
(when (= (volume-of-solid 10 5 4) 200)
(set! score (add1 score)))
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but I can't figure out how to do it safely.
It seems like if I use make-module-evaluator, I'm stuck in the context
of the original student program--that is, Beginning Student Language,
without the ability to accumulate a score or use constructs that
aren't defined in BSL. If I provide the student functions in full
Racket, I don't get the safety of the sandbox, and the student code
could do something not nice to my test system.
Obviously, there's a place here for a really nice macro-based testing
harness that checks for errors in each student function call, lets you
assign points for each test, etc., but I have to figure out how to get
the definitions I want to test safely into a context that lets me
write the code to evaluate them.
Thanks in advance,
Todd